Air-compressor.



J. J. KIELY.

AIR COMPRESSOR.

APPLICATION FILED DECLS, 1909.

975,1 36. Patented Nov. 8, 1910.

2 SHEETSBHEET l.

Patented Nov. 8, 1910.

W m g x @m 3 av & n r 0% av? o rMv AW UNITED STATES PAEN FFICE.

,TAMES J. KIELY, OF CHICAGO, ILLINOIS.

AIR-COMPRESSOR.

Specification of Letters Patent.

Patented Nov. 8, 1910.

Application filed December 8, 1909. Serial No. 531,973.

To allwhom ti may concern:

Be 1t known that 1, JAMES J. KIELY, a citizen of the United States, residing at Chicago, county of Cook. and State of Illinois, have invented certain new and useful Improvements in Air-Compressors, of winch the following is a specification.

percussion of the piston reciprocally mount ed in the latter.

A further object is the provision of an air compressor which will be thoroughly eflicient in construction and operation.

Other objects will appear hereinafter.

With these objects in view my invention consists in an air compressor characterized as above mentioned and in certain details of construction and arrangement of parts all as will be hereinafter fully described and particularly pointed out in the appended claims.

My invention will be more readily understood by reference to the accompanying drawings forming a part of this specification, and in which,

Figure 1 is a partially sectional side elevation of my device in its preferred form. Fig. 2 is a top plan View thereof, and Figs. 3 and 4 are transverse sections taken on sub stantially the lines mm and 1 1 of Fig. 1.

Referring now to the drawings 1 indicates a suitable base centrally mounted upon and rigidly secured to which is a vertically disposed bracket 2 terminating at its upper extremity in an integral horizontal cylinder 3 open at both ends. Having their inner ends reciprocally mounted in there spective ends of said cylinder are similar oppositely acting pistons 4 and 4; Having their lower slotted extremities fulcrumed to pins 5 extending between pairs of upwardly projecting ears 6 provided upon opposite sides of the base 7 of the bracket 2. the same projecting upwardly therefrom and being connected to depending ears 8 provided upon the under sides of the pistons 4 and 4 are levers 9 and 9' respectively. Con necting said levers, the same extending through an opening 10 formed in the bracket 2 for the reception thereof, is a helical tension spring 11, adapted, through the medium of said levers, to normally hold the pistons 4 at their inner extremities of movement, that is with their adjacent end surfaces in forced contact, as shown in dotted lines in Fig. 1.

Formed in the upper side of the cylinder 3 midway the extremities thereof is an opening 12. Leading from said opening to one extremity of said cylinder is a guide channel 13. Having its lower contracted tubu- 'lar exhaust end portion 14 mounted in a tubular bracket 15 rigidly mounted upon the upper side of the cylinder 3, the lower extremity of said end portion being positioned directly above and in close proximity with the upper edges of the channel 13, is a magazine 16 which is adapted to contain the percussion-powder balls 17 employed in the engine. Said magazine is preferably of a funnel form, as shown, whereby the balls contained therein will, by gravity, be automatically fed to a position for exhaustion.

Having its extremity 18 secured to the upper side of the piston 4 midway the ex-' tremities thereof, the free end portion 19 thereof extending parallel with the axis of said piston and toward the inner end thereof is an angular rod 20. Said rod is of such transverse dimensions and is so disposed'that the free end thereof snugly fits the channel 13, andis of such a length that, when the piston 4 is at the inner extremity of its movement, said free extremity thereof will register with the adjacent side of the opening 12, and that, when said piston is at its outer extremity of movement said rod extremity will be withdrawn from beneath the lower exhaust extremity of the magazine 16. With this arrangement, it will be observed that, with each reciprocation of the piston 4 a powder ball will be forced alongthe channel 13 by the rod 20 and deposited in the opening 12. By forming said rod, as before stated, of transverse dimensions such that the same snugly fits the channel 13, and by employing powder balls of a diameter substantially equal to the thickness of said rod, it will be seen that but one ball will each time be fed forwardly in said channel, said rod itself, upon removing the lowermost ball from a position beneath the exhaust opening of the magazine, serving as a closure to prevent the at the upper extremity of each of said tanks passage of anotheramtil the piston 4 is again forced by the explosion of a powder ball to a posit1on atits outer extremity of movement.

Provided at the inner extremity of ,the piston 4 at the upper side thereof, the same resting upon the inner upper surface of the cylinder, is a projecting transversely curved plate 21. Said plate is adapted to serve as a closure for the opening 12 and is of such a length that the same will remain in a traversing position over said opening until the piston at is approximately at the extremity df'its outward movement. The piston 4 is provided with a correspondingly positioned opening 22 in its inner end for the reception of said plate. Provided at the inner extremity of the piston 4- at substantially the center thereof is also a projecting plate 23 provided with a central .lon-

gitudinal groove 2:1: in its upper side. A

correspondingly positioned opening 25 of a transverse shape like that of said plate is provided in the inner extremity of the piston a for the reception of said plate. The latter is of a length slightly greater than the length of the piston stroke, hence when the engine is in operation, the same will intercept the powder ball as it is released by the plate 21' and retain .the same in a central position in the cylinder. By the provision of a central groove 24 in .the plate 23, said balls, which evidently enter the same, will positively be held in a central position upon the latter and upon the return stroke of the engine will be rolled down said groove by the piston 4 and .be exploded centrally between the contiguous surfaces of said pistons upon the percussion of the latter.

27 indicate exhaust ports, the same being so positioned as to be uncovered by the pistons 4 and 4upon the lattgr reaching the extremity of their outer movements. Formed, preferably centrally in .the cylinder 3 is a nippled opening 28. Arranged over'said opening isaplate 29 .held in 'position thereon by a perforated threaded cap 30. Said plate is of a certain predetermined strength, it being adapted to serve in the capacity of a blow-out or safety valve, and whereby, should the pressure in the cylinder exceed a certain limit saidv plate will be blown out or broken through thereby preventing possible injury to the other parts of the engine. Said valve plate is .held in such a manner that upon the breaking thereof another may evidently be readily ar-.

ranged in its place;

Arranged upon the base 1 at either side of the engine in alinement with the longitudinal axis of the cylinder thereof, is a tank 31. Threaded upon an inlet nipple 32 provided is a cylindrical fitting or cylinder 33. Said fittings are open each at only one end, the

same embracing the outer ends of the respective pistons 4 and 4,. 34: indicate inlet ports formed in the walls of said fittings, said openings beh'ig so positioned as to be uncovered by the pistons 4 and t only upon.

the latter being in positions at the extremity of their inward movements. Provided in each of the needles 32 is an ordinary check valve 35. \Vith this provisionit will be seen that with each outward reciprocation or stroke of the. pistons -l and 4 air admitted through the ports 34 into the cylinders 33 upon the inward movements of said pistons. will be forced and compressed into the tanks 31.

While I have shown what I deem to be the preferable form of my device I do not wish ,to be limited thereto as there might be various changes made in the details of con- Q pistons, resilient means interposed between said levers for normally holding said pistons at their inner extremities of movement, and means for automatically feeding a percussion-powder ball into said cylinder .With each reciprocation of said pistons, and means co-acting with said pistons whereby,iupon each reciprocation of said pistons, air is forced intosaid tanks, substantially as described.

2. The combination in an air compressor of an explosion engine, air tanks mounted adjacent said engine, said engine comprising a horizontal stationary cylinder open\ at both ends, oppositely acting pistons mounted in the respective ends of said cylinder, levers fulcrumed at their lower ends and having their upper ends connected respectively to said pistons, resilient means interposed between said levers for normally holding said pistons with their inner extremities contacting, said cylinder being provided substantially centrally in its up er side .with an opening, a percussion-powdier ball magazine, and means whereby, upon each .recl rocation of said pistons a ball is fed to said opening, and means co-acting with said .pistons whereby, upon each reciprocation thereof, air is forced into said tanks, substantially as described.

3. The combination'in an air compressor of an explosion engine, air tanks mounted adjacent to said engine, said engine comprising ahorizontal stationary cylinder open at both ends, oppositely acting pistons mounted .in the respective ends of said cylinder, substantially vertically disposed levers having their lower ends fulcrumed and having their upper ends connected respectively .to said pistons, a helicaltension spring havin its respective extremities connected to said levers for normally holding said pistons with their inner ends contacting, said cylinder being provided substantially centrally in its upper side with an opening, a percussionpowder ball magazine mounted above said cylinder, a channel leading from the lower exhaust end of said magazine to said opening, means carried by one of said pistons adapted, upon each reci rocation thereof, to remove a powder ball rom said magazine and to force the same in said groove into said opening, means in said cylinder adapted to centrally position the ball dropped therein, a safety valve provided in the walls of said cylinder, means co-acting with said pistons whereby, upon each reciprocation of said pistons, air is forced into said tanks, and check valves provided in said tanks.

,In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES J. KIELY.

Witnesses:

HELEN F. LILLIs,

JOSHUA R. H. Porrs. 

